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Copper threaded connection gate valve

A threaded connection and gate valve technology, applied in sliding valves, valve details, valve devices, etc., can solve problems such as corrosion of connecting threads and achieve the effect of avoiding corrosion

Inactive Publication Date: 2012-12-05
JIANGSU ZUZEM VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing copper gate valve, the connection between the valve body and the bonnet adopts a general thread connection method, and the connection thread between the valve body and the bonnet inevitably contacts with the medium, which causes corrosion of the connection thread by the medium

Method used

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  • Copper threaded connection gate valve

Examples

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Effect test

Embodiment Construction

[0009] see figure 1 As shown in the copper threaded soft-sealed gate valve, the valve cover 6 and the valve body 1 are connected by threads; the gate 2 and the valve stem 4 are connected by trapezoidal threads; when the handwheel 11 rotates, the valve stem 4 is driven to rotate, The valve rod 4 drives the gate plate 2 to move up and down through the trapezoidal thread, thereby realizing the opening and closing of the gate valve. The tight ring 7 is arranged on the inner lower part of the valve cover 6 . The positioning ring platform on the valve stem 4 is between the valve cover and the tight ring to prevent the valve stem from moving axially.

[0010] The valve cover 6 and the valve body 1 are sealed by a PTFE gasket 5; the connection thread between the valve body 1 and the valve cover 6 has no contact with the medium, which can prevent the medium from corroding the connection thread. Tighten the nut 10, and compress the PTFE packing 8 by means of the gland 9 to ensure the ...

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PUM

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Abstract

The invention provides a copper threaded connection gate valve which can be used for avoiding corrosion caused by media to a connection thread between a valve body and a valve cover. The copper threaded connection gate valve comprises the valve body with a water inlet and a water outlet at both ends, the valve cover connected with a valve body in a sealing mode, a valve rod connected with the valve cover through a thread and a gate plate which is connected to the lower end of the valve rod, positioned in a valve cavity of the valve body and contacted with a valve seat in a sealing mode, wherein the valve cover is connected with an outer thread through an inner thread, and a gasket is arranged between the inner bottom surface of the valve cover and the end surface of the valve body with the outer thread.

Description

technical field [0001] The invention relates to a gate valve, in particular to a copper threaded gate. Background technique [0002] In the existing copper gate valve, the connection between the valve body and the bonnet adopts a general thread connection method, and the connection thread between the valve body and the bonnet inevitably contacts with the medium, which causes the medium to corrode the connection thread. Contents of the invention [0003] The object of the present invention is to provide a copper threaded connection gate valve which can prevent medium from corroding the connecting thread between the valve body and the valve cover. [0004] This brass threaded connection gate valve consists of a valve body with water inlet and outlet at both ends, a bonnet sealed with the valve body, a valve stem connected with the bonnet through threads, and a valve stem connected to the lower end of the valve stem and located on the valve body. The gate plate in the valve ...

Claims

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Application Information

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IPC IPC(8): F16K3/02F16K27/04F16K27/12F16K3/30F16K41/04
Inventor 史军肖朋丁盛敏沈伟
Owner JIANGSU ZUZEM VALVES